2Ophthalmology. Excision of a strip of conjunctiva around the cornea; an instance of this.
Origin
Late 18th century; earliest use found in George Campbell (1719–1796), Church of Scotland minister and college head. From Hellenistic Greek περιτομή circumcision from ancient Greek περι- + τομή. With sense 1 compare post-classical Latin peritome and French péritomie.